mkv -> ogm conversion very very slow ?

[R3g]

I've got a 1400 MB mkv file, XviD video with two ogg tracks. I want to convert it to an ogm file, so direct stream copy -> save as ogm.
The problem is that the conversion is done at about 10 - 15 fps. It's faster than when I do encoding (my system is pretty slow), but the same operation with avi -> ogm conversoin is done at about 600 fps.
So is it normal behaviour to have such a slow conversion ?

[Suiryc]

Yup the way we read data from an mkv file is quite inefficient and slow :p
I added a preference settings that would speed up the process (around 5 times faster) few days ago. This require more memory when opening the file though.
Moreover in 1.5.1.1a there was a memory leak (not our fault :p) that would eat a lot of memory when reading an mkv file (not on opening, only when previewing/remuxing/demuxing it). So the bigger the file, the bigger memory used and the slower the reading of the mkv file.

All this is (should be) fixed in the CVS version ... just wait a bit for us to (re-)release a (valid) bugfix version :)

[ChristianHJW]

The very slow speed of 10 fps is a clear indoaction of the mem leak problem. The muxing process will start pretty fast, and then slow down significantly when all the RAM is used up and Windows is using its Virtual Memory ... as Suiryc said, we have this fixed in the next stable release ...